After a lot of struggeling with my soldering iron, I came up with this:

Wall of deaf MKI:

Bassicaly:

Clean signal from wireless system directly into channel 2 of the Bass 400, or through the Fuzz/Wah pedals into channel 1 (pedals switched by Patchmate) There's a non returning signal path to the tuner (on pedalboard) so the tuner preset is always muted.

From the Bass 400 the signal goes through the effect processors into the Stereo Strategy 400 (processors also switched by the Patchmate)

Signal from the Bass 400 is clean (no effects) or with fuzz/wah and goes into the 15 inch cabs. Signal from the Strategy is the signal from the Bass 400 + when needed stereo effects and goes into the 10 inch cabs

I managed to blow up a 10 inch EV speaker, while waiting for the replacement Spyker (one of my cats) Showed how brave she really is: